Alright guys, i have a buddy that has an 05' 3500 dually 2 wheel drive with the same mods as i do. He had to put his truck in the shop because #1 and #6 piston rings "washed out" (thats what he called it). the dealer replaced everything but the head and water pump. That was at 60,000 miles. Now at 96,000 they think it has happened again. They don't know what cylinder yet. My question to you guys is what do you all think would cause this? He does pull a gooseneck with a tractor or backhoe on it every once in a while. Do you think he's letting it get too hot?

thanks in advance

 

How much low RPM idling does he do.

 

That sounds like a byproduct of extensive idling. The Cylinders "wash down" with diesel during idling which decreases the protection from the engine oil. The rings then wear faster. Perhaps that's what the mechanic means?

 

could a leaking injector cause this?

 

Absolutely, positively, without a doubt it will. Does you friend do any type of oil analysis when changing his oil? Usually when an injector begins to leak down it will dilute the engine oil. If he was washing down the cyl walls from that then he should have been able to smell the diesel in the engine oil.


Tim

 

Tim, just so you know, the Diesel around here, all ULSD has very little smell at all.

I would say you could get a significant load before your nose would detect it unless you have the nose of a bloodhound.

My wife doesn't even complain when I come in after working on the truck...and with the old fuel she would scream about a single drop I swear!

 

I hear you Pat, and I mostly agree. It is definitely not as strong a smell as it used to be. The dilution needed to wipe out a set of rings would be very noticeable in my opinion.


Tim

 

i have to agree. either to much idling and not not high enough engine temps, or bad injector/s.